Fenrir Security Researcher at AfterQuery

Fenrir Security Researcher | Project-Based Pay | Worldwide Remote

Join Project Fenrir by AFTERQUERY and put your vulnerability research skills to work on a cutting-edge initiative. We're looking for experienced security researchers to discover real vulnerabilities in private repositories and transform them into difficulty-probed cybersecurity challenges designed to test and evaluate frontier large language models (LLMs).

Contributors are compensated per approved in-band task, per qualifying repository, with additional referral and milestone bonuses available.

Key Responsibilities

• Identify and document genuine vulnerabilities in private codebases
• Convert discovered vulnerabilities into structured, difficulty-calibrated cybersecurity tasks for LLM evaluation
• Apply fuzzing techniques and perform thorough crash triage
• Analyze and reason about complex codebases written in C, C++, Rust, and Go

Required Qualifications

• Demonstrated experience in security research and vulnerability discovery
• Proficiency with fuzzing tools and crash triage methodologies
• Strong ability to read and understand codebases in C, C++, Rust, and/or Go
• Self-motivated with the ability to work independently in a remote, project-based environment

This is a contractor role with flexible, project-based engagement. Compensation is tied to approved task submissions — see the full bonus structure for details.